Bobbin-winding machine.



G. L. MASON;

BOBBIN WINDING MACHIN-E.

APPLICATION FILED JUNE 15. I914.

Patented Feb. 22, 1916.

2 SHEETS-SHEET I G. L. MASON.

I sossm' WINDING MACHINE.

APPLICATION FILED JUNE 15. 1914.

1,172,475. Pate nted Feb. 22, 1916.

2 SHEETS-SHEET 2.

/ WITNESSES: 6 ZIWTOR. eozye & J %h\.6i BY w A TTORNE Y.

UNITED STATES PATENT OFFICE.

GEORGE L. MASON, 0F WAREHOUSE POINT, CONNECTICUT, Assronon rd GREEN & HOPSON, 0E SPRINGFIELD, MASSACHUSETTS, A PA rNEEsmr consrs'rnve .oE SAMUEL m. GREEN AND H RRY B. .norson.

BOBBIN-WINDING MACHINE.

Specification of Letters Patent.

Patented Feb. 22, 1916.

To all whom it may concern:

Be it known that I, GEORGE L. MASON, a citizen of the United States of America, residing in \Varehouse Point, county of Hartford, and State of Connecticut, have invented certain new and useful Improvements in Bobbin-\Vindin'g Machines, of which the following is a specification.

This invention relates to thread-winding machinery.

More Specifically it relates to improvements in machines such as are shown, for example, in the patent to Baker No. 626,403, granted June 6, 1899, which machines are adapted to wind thread into suitable form for use in the shuttle of a sewing machine.

An object of this invention is to provide improved means operable by the starting of the machine to secure the thin tubular core to the driving shaft of the machine and to automatically release the same when the spool has been wound to the proper diameter.

Other objects will appear in the detailed description and annexed claims to follow.

In general, my device comprises a drivingshaft, means to secure a thin cylindrical tube to said shaft, a guide for a number of threads, means to oscillate the same, adjustable devices to put a tension on the threads, cutter wheels adapted to sever the tubular core into the requisite number of sections,

automatic means to stop the machine when i the spools have been wound to the required diameter and means to eject the spools from the driving shaft. A preferred embodiment of my invention is illustrated in the accompanying drawings by way of illustration in which- Figure 1 is a front elevational view of-my thread-winding machine; Fig. 2 is a side elevational View thereof; Figs. 3 and 4. are views of detailed parts hereinafter to b described. V

Referring to the drawings, the main frame of the machine comprises a pair of standards A and A Journaled' in these standards A and A is a shaft aand mounted on the latter are tight and loose driving pulleys, 6 and 5 respectively, which are beltdriven from any suitable source of power. Fixed to the shaft a, at one end thereof, is a cone-pulley c and to the other end thereof a cam n. The latter is adapted to oscillate the thread guide in a manner to be described hereinafter. The cone-pulley 0 is belt-connected to a similar but reversely arranged pulley d which is fixed to a Sleeve 6. The latter is rotatably mounted in the standards A and A? and is adapted to drive an arbor e.

Fig. 3 is an enlarged View clearly showing in detail the manner of connectin the rotatable sleeve 6 and the arbor e. he end of the sleeve 6, which projects through the standard A is threaded to receive an internally threaded collar 14. One end of the arbor e is provided with a flange c which is securely clamped to the sleeve 1) by the collar 14. The outer end of the arbor e is cut or split as indicated at 10, and the internal surface of the arbor is slightly tapered. Slidably mounted within the sleeve 6 is a rod f, the outer end of which is tapered as indicated at f. The portion f is adapted, when moved longitudinally within the sleeve 6, to expand the split arbor e and securely clamp thereto a thin cylindrical tube 11. This tube 11 is positioned on the p ortign f against a shoulder as shown in Slidably mounted in the standards A and A is a rod 71.. The latter is located intermediate the shaft a and the sleeve 6 and extends rearwardly through a sleeve 13, past the standard A and the cone-pulleys c and d. Fixed to one end of this rod h is an upwardly extending arm 9 which loosely engages the rodf. The arm 9 is adapted to operate the rod f by striking upon either of the stop nuts on the latter. The other end of the rod h is enlarged to form a plunger 72/ and extends within a sleeve 16 which is fixed to the standard A. The plunger 71. is movable within this sleeve 16 and is actuated by a spring located within the latter. The plunger 71. is further provided with an annular groove 17 in which an arm 2 is adapted to engage to restrain the rod 71, from movement by the spring. The arm p is integral with a sleeve pivotally mounted at 9, bearing another arm 79 which is adapted to operate the arm p and release the plunger h by means to be described hereinafter.

Threads from suitably located supply bobbins (not shown) are carried downwardly I through the guiding eyes w which are fixed of which is adjustable by a thumb screw as clearly shown in Fig. 2. This part of the structure constitutes a means for placing tension upon the thread and is of the wellknown construction. The threads pass from the tension device upwardly over a thread guide 7* to the bobbin l1.

Loosely mounted upon the main shaft a and adjacent to the cam n is a yoke 20 which is provided with a universal joint to permit limited rotative movement in two directions. Fixed to the yoke 20 and extending outwardly therefrom are cam followers 0 which engage the face of the cam n. The face of' the latter is not square with the shaft a but is at a slight angle thereto, so that as the cam n'rotates the followers 0 are oscillated slightly to and fro. The thread guide 1', previously mentioned, is fixed to the yoke 20 and is provided with a plurality of V- shaped notches to receive the thread. The upper portion of the guide r bears directly upon the peripheral surface of the thread on the bobbin 11 and'is partially rotated thereby in a uniform-manner as the diameter of the spool increases. Fastened to the yoke 20 is an outwardly extending arm q which is provided at its outer extremity with jaws between which is located the arm 77 heretofore described. The arm 9 is adapted to turn as the guide 1' turns and a spring 19, one end connected to the frame and the other to arm g, tends to resist such turning movement.

Slidably mounted inthe standards A and A and directly above the sleeve 1) is a rod u. The end of the rod a, which projects beyond the standard A, carries a depending arm at, hereinafter called the ejector arm'. The lower portion of the arm t surrounds and is freely slidable on the arbor e. The rod u is adapted to be operated by a bell-crank lever is, pivotally mounted in a bracket A at Z. The depending arm of the bell crank la is forked to engage a pin transversely located in the rod u. The outwardly extending arm of the bell crank is connected to any suitable operating means, for example, a foot-treadle. A. torsional spring m, clearly shown in Figs. 1 and 2, maintains the bell crank lo and the rod u in the position shown in Fig. 2.

A bell crank z is pivotally mounted at 7' in a bridge A which connects the standards A and A The outwardly extending arm ber 12 (see Fig. 2) which engages the sides of the belt on the cone-pulleys c and (Z and is adapted to be adjusted along said sleeve by hand, to position the belt thereon. This member 12, when adjusted is held in place on the sleeve by a set screw.

Mounted upon a stud. '1), outwardly projecting from the standard A, is an arm 18. The latter is formed with a depending yoke in which a series of cutter wheels 8 arerotatably mounted. The arm 18 is maintained in the position shown in Fig.1 by a torsional spring on the stud v. A bell crank 92, fixedly secured to'the stud v, is located in the path of a lug 18 which projects from one side of the arm 18. The member 00 forms a stop member and the two arms thereof define the limit of rotative movement of the arm 18.

In operation, a thin cylindrical bobbin 11 is, placed upon the arbor e and the threads. which have been brought from the tension device 2, upwardly, and over the thread guide, 1', are fastened thereto by tying or otherwise. The lever 71 is then actuated. which forces the tapered rod 7 into the arbor e and expands the latter to grip the bobbin 11.. Simultaneously with this movement. the rod h is moved to the left (as viewed in Fig. 2), and the belt shipper 1 moves the driving-belt from the loose-pulley 5 to the tight pulley 6 to drive the shaft a. As the rod 71, moves to the left, the plunger it thereon compresses the spring within the sleeve 16, ,and finally the arm 79 drops into the notch 17. The parts are then in the position. shown in the drawings.

Immediately after the machine has been started, as described, the operator swings the cutter wheels 8 downwardly by hand until they engage with the rotating bobbin 1].. This action severs the bobbin 11 into the requisite number of sections. The lower arm of the stop warrests the motion of the arm 18 and prevents cutting of the arbor by the wheels .9. After the bobbin has been cut, the arm 18 is released, and the cutter wheels 8 are automatically returned to the position shown in Fig. 1 by the torsional spring on the stud e.

As the shaft (2 rotates, oscillating movement is imparted to the thread guide r by the cam n. Thus, the threads are wound on the bobbin 11 in reversely arranged over- III lapping spirals. The pitch of the spiral winding or the lay, as it is termed in the art, may be varied by moving the stop 12 along the sleeve 13 which varies the speed on the shaft 6 in an obvious manner.

As the thread builds up on the bobbin, the guide 1-, which bears on the thread by reason of the spring actuated arm slowly turned. When the thread has built up to the required diameter, the arm 9 strikes the arm 1) and moves the latter. This operation lifts the arm 32' from the engagement with the annular slot 17 in the plunger h and allows the latter to be actuated by the spring within the sleeve 17. This action forces the rod h to the right (as seen in Fig. 2) which shifts the drivingbelt from the tight pulley 6 to the loose pulley 5 and stops the machine. Simultaneously, with this action, the expander rod f is withdrawn from contact with the arbor e. The bobbin 11, fully wound with thread and severed into sections, is then forced from the arbor e by the arm t, actuated by the bell-crank'lc.

Thus it will be seen that I have provided a simple, efiicient, and automatic machine for winding thread in suitable form for use in shuttles.

It is recognized that many changes and modifications may be made from the structure disclosed herein Without departing from the scope of my invention which is more truly defined in the appended claims.

What I claim is l. A- thread winding machine, comprising in combination, a frame, a split arbor mounted in said frame and adapted to receive a bobbin, means to rotate said arbor,

a rod slidable within said arbor, means controlled by the starting of the machine to force said rod into engagement with said arbor to expand the latter a ainst said bobbin, a guide member adapte to receive and position a plurality of threads to be wound upon said bobbin, means to oscillate said guide member, said guide member adapted to bear upon the peripheral surface of the wound threads upon said bobbin, means controlled by the movement of said guide member to stop the rotation of said arbor, when the threads have been built up to a predetermined diameter, and to withdraw said rod from engagement with said arbor, and means to place a tension on said threads.

2. A thread winding machine, comprising in combination, a frame, a split arbor mounted therein and adapted to receive a bobbin, means to rotate said arbor, a tapered rod slidable within said arbor, a guide member adapted to receive and position a plurality of threads to be wound upon said bobbin, means to oscillate said member, said member adapted to bear upon the peripheral surface of the wound threads on said bobbin, and to be moved thereby, a rod slidably mounted in said frame, a connection between the latter and the tapered rod, a spring arranged to force said rod in one direction, a lever to force said rod in the other direction, a latch to hold said rod under pressure of said spring, a lever on said guide arranged, when the wound threads on said bobbin have reached a predetermined diameter to move said latch and release said spring, whereby said tapered rod is retracted from said arbor to release said bobbin, and means operable from said rod to start and stop the rota tion of said arbor.

, GEORGE L. MASON.

Witnesses:

H. E. HARTWELL, F. G. NEAL. 

